Without microscopes and other modern equipment, attempts to teach science were futile.
没有显微镜及其他现代化
设备, 想教授自然科学是不会有成果。
效
, 用, 
词词, 益;;;用;,使达不到预期目
;;用;;;效;
误思想指引,不明智;Without microscopes and other modern equipment, attempts to teach science were futile.
没有显微镜及其他现代化设备, 想教授自然科学是不会有成果。
He is a futile sort of person.
他是一个没有用人。
They were killed, to the last man, in a futile attack.
因为进攻失败, 他们全部被杀, 
一幸免。
Their efforts to revive him were futile.
他们对他抢救效。
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